package B.w.OOday05;
/**static final常量的演示*/
public class StaticFinalDemo {
    public static void main(String[] args) {
        System.out.println(Loo.PI);//常常通过类名点来访问
        //Loo.PI=3.1415926;//编译错误，常量不能被改变
        System.out.println(Loo.num);
        System.out.println(Loo.COUNT);
    }
}
class Loo{
    public static int num=5;
    public static final int COUNT=5;
    public static final double PI=3.14159;
    //public  static final int NUM;//编译错误，常量必须声明同时初始化
}













